package com.example.demo.dao;

import com.example.demo.pojo.Department;
import com.example.demo.pojo.Employee;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

//员工dao
@Repository
public class EmployeeDao {
    //模拟数据库中数据
    private static Map<Integer,Employee> employees = null;
    //员工有所属的部门
    @Autowired
    private DepartmentDao departmentDao;

    static {
        //创建一个模拟员工表
        employees = new HashMap<Integer, Employee>();
        //添加记录
        employees.put(101, new Employee(101,"AA","A2642562640@qq.com",1,new Department(101,"教学部")));
        employees.put(102, new Employee(102,"BB","B2642562640@qq.com",0,new Department(102,"市场部")));
        employees.put(103, new Employee(103,"CC","C2642562640@qq.com",1,new Department(103,"教研部")));
        employees.put(104, new Employee(104,"DD","D2642562640@qq.com",0,new Department(104,"运营部")));
        employees.put(105, new Employee(105,"EE","E2642562640@qq.com",1,new Department(105,"后勤部")));
    }

    //主键自增
    private static Integer initId = 1006;
    //增加一个员工
    public void save(Employee employee){
        if (employee.getId() == null) {
            employee.setId(initId++);
        }
        employee.setDepartment(departmentDao.getDepartmentById(employee.getDepartment().getId()));
        employees.put(employee.getId(),employee);
    }

    //查询全部员工信息
    public Collection<Employee> getAll(){
        return employees.values();
    }

    //通过id查询员工
    public Employee getEmployeeById(Integer id){
        return employees.get(id);
    }

    //删除员工通过id
    public void delete(Integer id){
        employees.remove(id);
    }
}
